浪費我時間的 Wordpress

首先聲明: 不是 wordpress 不好用, 其實是我在要用Wordpress 時沒先搞清楚是什麼東西, 等都裝好了設好了才覺得不適合我使用, 浪費了我的時間了解這東西.

第一: 這是給要自行架設blog的人用的, 所以用別人架好的blog寫文章的人(如我)就不適用了
第二: 要裝wordpress時, 你要準備好能執行 PHP 的環境與安裝或找個MYSQL資料庫, 連名稱都看不懂的人(如很多人...)也就不適用了
第三: 就算會使用PHP與MYSQL, 但要找台電腦來裝這些, 還要隨時Online, 這也不是一般人可以做得到的, 雖然用 Google 搜尋會發現不少免費的, 但是你要有心理準備這些站不穩或是掛掉讓你心血全沒的打算. 那還是算了吧......

結論, 下次想裝一個別人都說好用的東西之前, 還是得先仔細看看這碗糕到底適不適合自己的需求,以免浪費寶貴時間.

Google + wikipedia = googlepedia

googlepedia 這是一個不錯的 firefox plugin

在google 的搜尋界面上, 搜尋結果也會同步顯是在 wikipedia 上的搜尋結果
如圖:

Google ig - Select Theme !!

Google ig 出現了一個新功能, 選擇佈景(Theme),

##CONTINUE##

(在圖片右下角)

總共有7種不同的佈景主題可以選, 而且每種佈景隨著時間變化會出現不同的圖樣



比較機車的一點是, 你必須將「語言偏好設定」改成不是「繁體中文」,像我是改成「English」, 這樣這個新功能就會出現了~~

XBMC 選擇字幕

XBMC 在這一版本可以自由的選擇字幕檔, 不用再像以前一定要將字幕檔名與影片檔名
編成同樣名稱. eg: 字幕檔名為 abc.srt . 影片檔名為 abc.avi
##CONTINUE##
方法如下:

1. 在撥放影片時, 選擇 start 鍵.
2. 選擇 聲音圖示
3. 就會出現"字幕"與"選擇字幕.... "兩各項目
4. "字幕'' 選擇上下鍵就可選擇不同語言的字幕, 如你在電腦用mplayer2觀看一樣
5. "選擇字幕.... " 就會出現檔案目錄讓你選擇你要的字幕檔案

ps. 還可以選擇壓縮檔內的字幕檔, 有機會在試看看此功能....

JAVA 認證心得 -- SCWCD 1.4 (5)

• Form Based Authentication

Username -> j_username

Password -> j_password

##CONTINUE##

• ＜jsp:useBean id=”name” scope=”page|request|session|application” ＞

beandetail are :

type=”typeName”

class =”className”

class =”className” type=”typeName”

beanName=”beanName” type=”typeName”

• The session management implementation in the servlet API revolves around the HttpSession interface
• ＜attribute＞

  ＜name＞

  ＜required＞

  ＜rtexprvalue＞

  ＜type＞

• ＜security-constraint＞

  ＜web-resource-collection＞

  ＜web-resource-name＞

  ＜url-pattern＞

  ＜http-method＞

  ＜/web-resource-collection＞

  ＜auth-constraint＞

  ＜role-name＞

  ＜/auth-constraint＞

  ＜login-config＞

  ＜auth-method＞

  ＜realm-name＞

  ＜/login-config＞

• The setHeader() method of the HttpServletResponse interface is used to set headers of an Http response

• jsp:declaration
• SingleThreadModel

JAVA 認證心得 -- SCWCD 1.4 (4)

• jspInit() _jspService jspDestory()
  

##CONTINUE##

• ＜body-element＞ empty , JSP , tagdependent
• 301 Moved permanently , 302 Moved temporarily
• ＜web-app＞

  ＜listener＞

  ＜ listener-class＞＜/listener-class＞

  ＜/listener＞

  ＜/web-app＞

• RequestDispatcher è using getRequestDispathcher method of ServletContext ingerface
• When a JSP custom tag is read, and an action started, the pageContext object is passed to the tag object so that its environment can be initialized
• Web application servlet initialization param

  ＜web-app＞

  ＜context-param＞

  ＜param-name＞＜/param-name＞

  ＜param-value＞＜/param-value＞

  ＜/context-param ＞

  ＜/web-app＞

• The implicit JSP arguments are only visible in the jspService() method
• The object implementing the ServletContextAttributeListener interface is notified of changes to the attributes list on the servlet context of a web application
• ＜Init-param＞

  ＜param-name＞

  ＜param-value＞

JAVA 認證心得 -- SCWCD 1.4 (3)

• SKIP_BODY EVAL_BODY_INCLUDE

##CONTINUE##

• SKIP_PAGE EVAL_PAGE
• String username = (String) request.getSession().getAttribute(“ttt”);
• ＜%@page isTreadSafe=”false”%＞
• the three type of JSP directive type are include , taglib , page
• In JSP , the default import list is

  java.lang.*

  java.servlet.http.*

  java.servlet.*

  java.servlet.jsp.*

• login-config (auth-method?,realm-name?,form-login-config?)
• servlet-mapping(servlet-name,url-pattern)
• setContentType() belong to ServletResponse
• res.sendRedirect(“dd”); req.getParameter(“dd”)
• ServletContext interface and GenericServlet class provide log method
• ServletOutputStream out = response.getOutputStream()

  OutputStream out = response.getOutputStream()

• GenericServlet is abstract class , so must implement service(req,res)
• getIntHeader(“xxx”) of HttpServletRequest
• all the sub element of ＜web-app＞ are optional
• HttpSessionActivationListener === session migrated

  HttpSessionAttributeListener === notify whether add remove replace method attributes in HttpSession objects

• Notified change attr in ServletContext. Must implement ServletContextAttributeListener

• HttpServletResponse setStatus(int c) sendError(int c)
• This.getServletContext().log() log()
• Notify objects add remove form session must implement HttpSessionBindingListener interface
• HttpSessionListener notify a session is created or destroyed

  sessionCreated(HttpSessionEvent se)

  sessionDestroyed(HttpSessionEvent se)

JAVA 認證心得 -- SCWCD 1.4 (2)

• getAuthType() method of HttpServletRequest returns name of the authenticating scheme used to protect the servlet

##CONTINUE##

• invalidate() is used to expunge or invalidate a session object

• The sendError method causes the server to generate and send an appropriate server-specific page describing the error

• UnavailableException exception indicates to the web container that the servlet is either temporarily or permanently available

• getLastModified method belongs to which HttpServlet interface
• sessionCreated and sessionDestroyed are the valid methods of HttpSessionListener
• HttpSessionActivationListener interface is designed to handle sessions that migrate from one server to another
• getInitParameterNames returns names of the context's initialization parameters as Enumeration of String objects
• ＜taglib＞

  ＜taglib-uri＞＜/taglib-uri＞

  ＜taglib-location＞＜/taglib-location＞

  ＜/taglib＞

  ＜! taglib id＞

• The getResource() and getResourceAsStream() belong to ServletContext interface
• ＜session-config＞

  ＜session-timeout＞1＜/session-timeout＞ 1 min

  ＜/session-config＞

  ＜session-timeout＞0＜/session-timeout＞ never expire

JAVA 認證心得 -- SCWCD 1.4 (1)

• HttpServletResponse.encodeURL()

##CONTINUE##

• findAttribute method Searches for the named attribute in page, request, session and application scope(s)
• The Valid return types for doAfterBody are EVAL_BODY_AGAIN or SKIP_BODY
• Fa~de pattern provides a layer between clients and subsystems of a complex system; shields clients from subsystem components, making the subsystems easier to use
• The Default value for body-content element of tag library descriptor is JSP
• Write the tag library descriptor element name that specifies that the value of attribute may be dynamically calculated at request time rtexprvalue
• The two sub elements of taglib element are taglib-uri and taglib-location
• Application jsp implicit object provides access to resources of the servlet engine (resources, attributes, init context parms, request dispatcher, server info, URL & MIME resources)
• Instance variables are thread-safe if the servlet implements SingleThreadModel
• isRequestedSessionIdFromCookie method checks whether the requested session id came in as cookie
• The Valid values of transport-guarantee of user-data-constraint element of Deployment Descriptor are None, INTEGRAL or CONFIDENTIAL

• ＜transport-guarantee＞NONE or INTEGRAL or CONFIDENTIAL＜/transport-guarantee＞

  ＜/user-data-constraint＞

JAVA 認證心得 -- SCWCD 1.4

我當初參加的是 Beta Exam, (Sun Certified Web Component Developer for J2EE 1.4 beta exam)
也就是只要考過的話, 不但不用繳考試費, 而且是全世界第一批取得該證照的人.
這也是我在考取SCJP後第二張JAVA認證. 當時尚未以系統化的方式準備考試
所以所寄的筆記皆為重點是摘要, 不像其他認證心得有根據其考試章節分類紀錄重點.
不過應該也具參考價值, 有興趣的就參考參考囉

接下幾篇是我當初準備 SCWCD 認證的心得筆記~~~